The Prophet (ﷺ) was ordered to prostrate on seven bony parts and not to tuck up his clothes or hair.
Sahih al-Bukhari Book 10, Hadith 210
← Previous Hadith The people used to pray with the Prophet (ﷺ) tying their Izars around their necks because of their small sizes and the women were directed that they should not raise their heads from the prostrations till the men had sat straight.

Sahih al-Bukhari Book 10, Hadith 209 Next Hadith → The Prophet (ﷺ) said, "I have been ordered to prostrate on seven (bones) and not to tuck up the hair or garment."

Sahih al-Bukhari Book 10, Hadith 211