For reference purposes, following is the complete article of Ghamidi Sahab that you’re referring:

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Ibn Hazm writes:

فَلَوْ عَرَضَتْ فَرْجَهَا شَيْئًا دُونَ أَنْ تُدْخِلُهُ حَتَّى يُنْزِلَ فَيُكْرَهُ هَذَا، وَلَا إثْمَ فِيهِ – وَكَذَلِكَ ” الِاسْتِمْنَاءُ ” لِلرِّجَالِ سَوَاءٌ سَوَاءٌ، لِأَنَّ مَسَّ الرَّجُلِ ذَكَرَهُ بِشِمَالِهِ مُبَاحٌ، وَمَسَّ الْمَرْأَةِ فَرْجَهَا كَذَلِكَ مُبَاحٌ، بِإِجْمَاعِ الْأُمَّةِ كُلِّهَا، فَإِذْ هُوَ مُبَاحٌ فَلَيْسَ هُنَالِكَ زِيَادَةٌ عَلَى الْمُبَاحِ، إلَّا التَّعَمُّدُ لِنُزُولِ الْمَنِيِّ، فَلَيْسَ ذَلِكَ حَرَامًا أَصْلًا، لِقَوْلِ اللَّهِ تَعَالَى: {وَقَدْ فَصَّلَ لَكُمْ مَا حَرَّمَ عَلَيْكُمْ} [الأنعام: ١١٩] وَلَيْسَ هَذَا مِمَّا فَصَّلَ لَنَا تَحْرِيمَهُ فَهُوَ حَلَالٌ، لِقَوْلِهِ تَعَالَى: {خَلَقَ لَكُمْ مَا فِي الأَرْضِ جَمِيعًا} [البقرة: ٢٩] إلَّا أَنَّنَا نَكْرَهُهُ، لِأَنَّهُ لَيْسَ مِنْ مَكَارِمِ الْأَخْلَاقِ، وَلَا مِنْ الْفَضَائِلِ.

“If a woman rubs her vagina without letting something enter then this is makrouh[disliked] and she wouldn’t be a sinner. Similarly if a man did the same thing then the same rule would apply, because it’s permissible for a man and a woman to touch their private area with their left hands. And there is a consensus about this. Touching this area is Halal and there isn’t anything extra to add to it except a person would touch their private parts until they have an ejaculation and this isn’t Haram based on the verse“ while He has explained to you in detail what is forbidden to you, [ Al-An-am 119] and this doesn’t prove that it isn’t allowed . Allah said: He it is Who created for you all that is on earth. [ Al-Baqarah:29] However I consider it bad manners so I view it to be Makruh“.

(Excerpt from Al-Muhalla by Ibn-e-Hazm- 12/407 [Dar-ul-Fikr Beirut])

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Then He mentions opinions of some of the companions of the Prophets:

Ibn-e-Abbas:

نِكَاحُ الْأَمَةِ خَيْرٌ مِنْهُ، وَهُوَ خَيْرٌ مِنْ الزِّنَى

Marrying a slave girl is better than it, and it is better than fornication (zina).

وَمَا هُوَ إلَّا أَنْ يُعْرِك أَحَدُكُمْ زُبَّهُ حَتَّى يُنْزِلَ الْمَاءَ

It is nothing but rubbing one’s private parts until a fluid comes out.

Ibn-e-Umar:

إنَّمَا هُوَ عَصَبٌ تُدَلِّكُهُ

It is merely rubbing an organ.

(Excerpt from Al-Muhalla by Ibn-e-Hazm- 12/407 [Dar-ul-Fikr Beirut])

As for the views of Ibn Abbas and Ibn Umar, Ibn Hazm regards the chains for these narrations to be weak.

قال أبو محمد رحمه الله: الأسانيد عن ابن عباس , وابن عمر في كلا القولين مغموزة

“Abu Muhammad, may God have mercy on him, said: The chains of transmission on the authority of Ibn Abbas and Ibn Umar in both sayings are ambiguous”.

(Excerpt from Al-Muhalla by Ibn-e-Hazm- 12/408 [Dar-ul-Fikr Beirut])

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Then He mentions opinions of some of the Tabain:

إلَى قَتَادَةَ عَنْ الْعَلَاءِ بْنِ زِيَادٍ عَنْ أَبِيهِ أَنَّهُمْ كَانُوا يَفْعَلُونَهُ فِي الْمَغَازِي ” يَعْنِي الِاسْتِمْنَاءَ ” يَعْبَثُ الرَّجُلُ بِذَكَرِهِ يُدَلِّكُهُ حَتَّى يُنْزِلَ

– قَالَ قَتَادَةُ: وَقَالَ الْحَسَنُ فِي الرَّجُلِ يَسْتَمْنِي يَعْبَثُ بِذَكَرِهِ حَتَّى يُنْزِلَ، قَالَ: كَانُوا يَفْعَلُونَ فِي الْمَغَازِي.

وَعَنْ جَابِرِ بْنِ زَيْدٍ أَبِي الشَّعْثَاءِ قَالَ: هُوَ مَاؤُك فَأَهْرِقْهُ ” يَعْنِي الِاسْتِمْنَاءَ “.

قَالَ عَبْدُ الرَّزَّاقِ: وَذَكَرَهُ مَعْمَرٌ عَنْ أَيُّوبَ السِّخْتِيَانِيِّ، أَوْ غَيْرِهِ عَنْ مُجَاهِدٍ عَنْ الْحَسَنِ: أَنَّهُ كَانَ لَا يَرَى بَأْسًا بِالِاسْتِمْنَاءِ

لَكِنَّ الْكَرَاهَةَ صَحِيحَةٌ عَنْ عَطَاءٍ.

وَالْإِبَاحَةُ الْمُطْلَقَةُ صَحِيحَةٌ عَنْ الْحَسَنِ.

It was also narrated on the authority of Qataadah from Al-Alaa ibn Ziyaad from his father that he said: “They used to do that, i.e. masturbate, in battles. A man would fondle his penis, rubbing it until he ejaculates.”

Qataadah said: “Al-Hasan said (when he was asked) about the man who masturbates until he ejaculates: ‘They used to do that in battles.”

And on the authority of Jabir bin Zaid Abi Al-Shatha: “It is your water; you can discharge it [if you want]“.

Abdul Razzaaq said: “Mamar narrated on the authority of Ayyoob As-Sakhtiyaani, or another narrator, on the authority of Mujaahid from Al-Hasan that he did not see anything wrong with masturbation.”

“But the dislikeness (Makruh) is authentically reported on the authority of Ataa“.

“And The absolute permissibility – i.e. of masturbation –is authentically reported on the authority of Al-Hasan.”

(Excerpt from Al-Muhalla by Ibn-e-Hazm- 12/408 [Dar-ul-Fikr Beirut])