“The Messenger of Allah (ﷺ) said to Bilal: ‘Come and eat, O Bilal.’ He said: ‘I am fasting.’ The Messenger of Allah (ﷺ) said: ‘We are eating our provision, but most of Bilal’s provision is in Paradise. Do you realise, O Bilal, that the bones of the fasting person glorify Allah and the angels pray for forgiveness for him so long as food is eaten in front of him?’”
Sunan Ibn Majah Book 7, Hadith 112