Ibn Ishaq states that after this, revelation began to come to the Prophet (peace and blessings be upon him) in succession. He would affirm the revelation that came to him from Allah, receive it with great acceptance, and bear its responsibility whether people were pleased with it or not. Prophethood carries heavy burdens. It is a duty that entails responsibility. Only prophets endowed with strength and determination can bear this burden and duty. With Allah's help and tawfiq (divine enabling), they withstand the harm they encounter from people and the protests against the rulings brought from Allah.
The Messenger of God (peace and blessings be upon him) also continued on his path in accordance with Allah's command, despite the opposition and harm he faced from his people.
Ibn Ishaq reports that Khadija bint Khuwaylid believed in the Prophet (peace and blessings be upon him). She affirmed the commands that came to him from Allah. She supported and assisted him in his mission. She was the first to have iman (faith) in Allah and His Messenger and the first to affirm the rulings that came from Allah. Thus, Allah, Exalted is He, lightened the burden of His Messenger. The Messenger of God found solace in Khadija's help against the protests, denials, and things he heard that displeased him. When the Messenger of God (peace and blessings be upon him) returned home after facing harm from his people, Khadija would console him, lighten his burden, affirm him, and advise him not to pay attention to what people did—may Allah be pleased with her and make her pleased.
Ibn Ishaq, through Hisham b. Urwah from Abdullah b. Ja'far, narrates that the Messenger of God (peace and blessings be upon him) said:
"I was commanded to give Khadija the glad tidings of a house of pearls for her in Paradise, in which there is neither noise nor fatigue."
This hadith is transmitted in the authentic collections of Bukhari and Muslim.
Ibn Ishaq said: The Messenger of God (peace and blessings be upon him) began to relate all the blessings that Allah, Exalted is He, had secretly bestowed upon him and the servants, to the extent that they would satisfy their possessors.
Musa b. 'Uqba, narrating from al-Zuhri, said: Khadija was the first to have iman (faith) in Allah and to affirm His Messenger. This occurred before the five daily prayers were made obligatory on the night of Isra. As for the original form of prayer, it became obligatory during Khadija's lifetime. This will be explained further on.
Ibn Ishaq said: Khadija was the first to have iman (faith) in Allah and His Messenger and to affirm the rulings brought from Allah.
When prayer was made obligatory upon him, Jibril (Gabriel) came to the Messenger of God. He struck the side of the valley with his heel, and a spring of Zamzam water gushed forth. Jibril and the Messenger of God performed ablution (wudu) with that water together. Then they prayed two rak'ahs (units of prayer) with four prostrations. The Messenger of God then returned home, his eyes delighted, his heart at peace, and having received pleasing things from Allah. He took Khadija by the hand and brought her to the spring. She also performed ablution like Jibril and prayed two rak'ahs with four prostrations. Then the Messenger of God and Khadija prayed secretly together. This prayer led by Jibril was a prayer distinct from the two prayers he led the Prophet in by the Ka'ba. There, Jibril explained to the Messenger of God the times of the five daily prayers, including their beginning and end. This event occurred after the prayers were made obligatory on the night of Isra. Its details, God willing, will be explained further on. Our trust and reliance is upon Allah.