HIS MARRIEAGE TO KHADIJAH:
When he returned to Makkah, Khadijah noticed, in her money, more profits and blessings than she  used  to. Her hireling also told her of Muhammad’s good manners, honesty, deep thought, sincerity and  faith.
She realized that she homed at her target. Many prominent men had asked for her hand in marriage  but she always spurned their advances. She disclosed her wish to her friend Nafisa, daughter of
Maniya,  who immediately went to Muhammad (Peace be upon him) and broke the good news to him. He  agreed  and requested his uncles to go to Khadijah’s uncle and talk on this issue. Subsequently, they were  married. The marriage contract was witnessed by Bani Hashim and the heads of Mudar. This took  place  after the Prophet’s return from Syria. He gave her twenty camels as dowry. She was, then, forty years  old and was considered as the best woman of her folk in lineage, fortune and wisdom. She was the  first  woman whom the Messenger of Allâh (Peace be upon him) married. He did not get married to any  other  until she had died.
Khadijah bore all his children, except Ibrahim: Al-Qasim, Zainab, Ruqaiyah, Umm Kulthum, Fatimah  and ‘Abdullah who was called Taiyib and Tahir. All his sons died in their childhood and all the  daughters  except Fatimah died during his lifetime. Fatimah died six months after his death. All his daughters  witnessed Islam, embraced it, and emigrated to Madinah.
REBUILDING AL-KA'BAH AND THE ARBITRATION ISSUE:
When the Messenger of Allâh (Peace be upon him) was thirty five, Quraish started rebuilding
Al-Ka‘bah.
That was because it was a low building of white stones no more than 6.30 metres high, from the days  of Ishmael. It was also roofless and that gave the thieves easy access to its treasures inside. It was  also exposed to the wearing factors of nature — because it was built a long time ago — that weakened  and cracked its walls. Five years before Prophethood, there was a great flood in Makkah that swept  towards Al-Ka‘bah and almost demolished it. Quraish was obliged to rebuild it to safeguard its holiness  and position. The chiefs of Quraish decided to use only licit money in rebuilding Al-Ka‘bah, so all  money  that derived from harlotry, usury or unjust practices was excluded. They were, at first, too awed to  knock down the wall, but Al-Waleed bin Al-Mugheerah Al-Mukhzumi started the work. Seeing that no  harm had happened to him, the others participated in demolishing the walls until they reached the  basis laid by Abraham. When they started rebuilding its walls, they divided the work among the tribes.
Each tribe was responsible for rebuilding a part of it. The tribes collected stones and startwork. The  man who laid the stones was a Roman mason called Baqum. The work went on in harmony till the  time  came to put the sacred Black Stone in its proper place. Then strife broke out among the chiefs, and  lasted for four or five days, each contesting for the honour of placing the stone in its position. Daggers  were on the point of being drawn and great bloodshed seemed imminent. Luckily, the oldest among  the  chiefs Abu Omaiyah bin Mugheerah Al-Makhzumi made a proposal which was accepted by all. He said:
“Let him, who enters the Sanctuary first of all, decide on the point.” It was then Allâh’s Will that the
Messenger of Allâh (Peace be upon him) should be the first to enter the Mosque. On seeing him, all  the  people on the scene, cried with one voice: “Al-Ameen (the trustworthy) has come. We are content to  abide by his decision.” Calm and self-possessed, Muhammad (Peace be upon him) received the  commission and at once resolved upon an expedient which was to conciliate them all. He asked for a  mantle which he spread on the ground and placed the stone in its centre. He then asked the  representatives of the different clans among them, to lift the stone all together. When it had reached  the proper place, Muhammad (Peace be upon him) laid it in the proper position with his own hands.
This is how a very tense situation was eased and a grave danger averted by the wisdom of the
Prophet
(Peace be upon him).
Quraish ran short of the licit money, they collected, so they eliminated six yards area on the northern