Reward of doing Iftar at the house of a brother in faith

“The reward of doing Iftar at the house of a brother in faith is seventy or ninety times the reward of a fast.”

2. Imam Ja’far Sadiq (a.s.) says, “One who goes to a brother in faith fasting and does Iftar at his house and does not tell him about his fast Allah grants him the reward of fasting for a year.”