I think it was in bible but in sahih bukhari I found,
Sahih Bukhari صحیح بخاری
Hadith # 3326
Translation:
Narrated Abu Hurairah (RA):
The Prophet ﷺ said, “Allah created Adam, making him 6O cubits tall. When He created him, He said to him, “Go and greet that group of angels, and listen to their reply, for it will be your greeting (salutation) and the greeting (salutations of your offspring.” So, Adam said (to the angels), As-Salamu Alaikum (i.e. Peace be upon you). The angels said, “As-salamu Alaika wa Rahmatu-l-lahi” (i.e. Peace and Allahs Mercy be upon you). Thus the angels added to Adams salutation the expression, Wa Rahmatu-l-lahi, Any person who will enter Paradise will resemble Adam (in appearance and figure). People have been decreasing in stature since Adams creation.