Even though the Prophet of Allah, sallallaahu ‘alayhi wa sallam, utilized the wealth of Abu Bakr when calling to Allah, he still preferred to use his personal money to get closer to Allah and to do acts of obedience

“Seldom did the Prophet of Allah, sallallaahu ‘alayhi wa sallam, not come to the house of Abu Bakr either during the day or night, but when he, sallallaahu ‘alayhi wa sallam, was given permission to leave to Madinah, he came to our house at noon. Abu Bakr was informed of the Prophet’s coming, and said: ‘The Prophet of Allah, sallallaahu ‘alayhi wa sallam, has only come to us (at this time of the day) because something important happened.’

‘O Messenger of Allah, these are my two daughters.’ He, sallallaahu ‘alayhi wa sallam, meant, `Aa’ishah and Asmaa’. So he, sallallaahu ‘alayhi wa sallam, said: ‘Did you have a feeling that I have been given permission to leave?’ Abu Bakr said: ‘I will accompany you, O Messenger of Allah.’ The Prophet of Allah, sallallaahu ‘alayhi wa sallam, responded: ‘You will accompany me.’ Abu Bakr then said: ‘O Messenger of Allah, I have two animals that I have prepared for travel, so take one of them. The Prophet of Allah, sallallaahu ‘alayhi wa sallam, responded: ‘I will take it and will pay its price.’”

the Prophet of Allah, sallallaahu ‘alayhi wa sallam, said: “Only on the condition that I pay the price needed to purchase it.” To which Abu Bakr said: “That condition is so, if you wish.”