People who come after the battle: do they get anything?

Sayyiduna Abu Musa (may Allah be pleased with him) said: We came to the army of the Messenger of Allah (peace and blessings be upon him) three days after the conquest of Khaybar, and the Messenger of Allah (peace and blessings be upon him) gave us a share of the spoils as well, and he gave a share to no one else who had not taken part in the battle.

It is narrated from Amir that Sayyiduna Umar (may Allah be pleased with him) wrote to Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) on the day of al-Qadisiyyah: "I am sending you the people of the Hijaz and the people of Syria. Whoever among them reaches the fighting before they disperse, give him a share of the spoils."

It is narrated from Ibn Abi Habib that Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) sent Sayyiduna Ikrimah bin Abi Jahl (may Allah be pleased with him) to reinforce Sayyiduna al-Muhajir bin Abi Umayyah and Sayyiduna Ziyad bin Labid (may Allah be pleased with them both). When they reached them, they had already achieved victory, and their corpses lay there covered in blood. They were also made partners in the spoils.

It is narrated from al-Hakam that the Prophet (peace and blessings be upon him) gave Sayyiduna Ja'far (may Allah be pleased with him) and his companions a share of the spoils on the day of Khaybar, although they had not taken part in the Battle of Khaybar.