Jami At Tirmidhi
229
Sahih+2

Abdul-Hamid bin Mahmud said:"We prayed behind one of the Amirs, the people compelled us such that we prayed between two columns. When we had prayed, Anas bin Malik said: 'We would be prevented from this during the time of Allah's Messenger

SahihAhmad Muhammad Shakir
SahihAl-Albani