مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1480
Musnad Abu Ishaq Sa'd bin Abi Waqqas
It was narrated from "Amir bin Sa"d (رضي الله عنه) from his father, that The Prophet (ﷺ) said to him: "Whatever you spend on your family of maintenance, you will be rewarded for, even the morsel that you lift to your wife"s mouth.”
Musnad Ahmad 1480Sahih (Darussalam), al Bukhari (56) and Muslim (1628)]