Jami` at-Tirmidhi 2368

Fadalah bin 'Ubaid narrated that when the Messenger of Allah (s.a.w) would lead the people in Salat some men would collapse among them during the Salat due to hunger – they were among them Ashab As-suffah – such that a Bedouin would say :'These people are mad' or "possessed." So when the Messenger of Allah (s.a.w) finished the Salah, he turned to them and said: 'If you knew what was in store for you with Allah then you would love to be increased in poverty and need.'” Fadalah said: “And on that day, I was with the Messenger of Allah(s.a.w).” (Hasan)