What was the source of income for the Messenger of Allah, peace and blessings be upon him, after the death of Lady Khadijah?

The Prophet (peace be upon him) engaged in trade before prophethood. After prophethood and the Hijra, this decreased due to his preoccupation with da'wah (calling to Islam). He would spend from what he had from previous trades, Khadijah's wealth, and Abu Bakr's wealth. Then Allah enriched him with what He ordained for him from the one-fifth of the spoils of war (ghanima) and the captured property (fay'), as in Allah's saying: "And know that whatever you gain of war booty - then indeed, for Allah is its one-fifth, and for the Messenger and for [his] near relatives and the orphans, the needy, and the [stranded] traveler, if you have believed in Allah and in what We sent down to Our servant on the Day of Criterion, the Day when the two armies met. And Allah is over all things competent" (Al-Anfal: 41), and His saying: "Whatever Allah has returned to His Messenger from the people of the towns - it is for Allah and for the Messenger and for [his] near relatives and the orphans, the needy, and the [stranded] traveler - so that it will not be a perpetual distribution among the rich from among you. And whatever the Messenger has given you - take it; and what he has forbidden you - refrain from. And fear Allah; indeed, Allah is severe in penalty" (Al-Hashr: 7).