"On the Day of Uhud, the Prophet (ﷺ) wore two coats of mail. He tried to get up on a boulder but was not able to, so Talhah squatted under him, lifting the Prophet (ﷺ) upon it such that he could sit on the boulder. So he said: (Paradise) "It is obligated from Talhah.'"

There are narrations on this topic from Safwan bin Umayyah and As-Sa'ib bin Yazid.

This Hadith is Hasan Gharib, we do not know of it except through the narration of Muhammad bin Ishaq.
Jami` at-Tirmidhi Book 23, Hadith 23