Sunan Abu Dawud
1081
Sahih+3

Ibn 'Umar said:When the Prophet (ﷺ) became fat, Tamim al-Dari said to him: Should I make for you pulpit, Messenger of Allah, that will bear the burden of your body ? He said: Yes. So he made a pulpit consisting of two steps

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid