Al-Qasim bin Abd al-Rahman (may Allah have mercy on him) said: Abdullah (may Allah be pleased with him) bought kharaj land, and its owner, meaning its dihqan (local landlord), said to him: I will pay the kharaj on your behalf and also look after the land.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18403
Imam al-Sha'bi (may Allah have mercy on him) said: Sayyiduna Abdullah (may Allah be pleased with him) bought kharaj land from a dihqan (local landlord) and stipulated that he would keep paying its kharaj.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18404
Ibn Abi Layla (may Allah have mercy on him) said: Hasan bin Ali (may Allah be pleased with them both) bought salt land, and Husayn bin Ali (may Allah be pleased with him) bought two barids (a measure of distance) of kharaj land. The narrator said: Sayyiduna Umar (may Allah be pleased with him) had returned their land to them and made peace with them on the kharaj which he had imposed on them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18405
Abdullah bin Hasan (may Allah have mercy on him) said: Sayyiduna Hasan and Sayyiduna Husayn (may Allah be pleased with them both) bought a piece of kharaj land.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18406
Al-Hakam (may Allah have mercy on him) narrates from Qadi Shurayh (may Allah have mercy on him) that he bought land of al-Hirah called Zuba, and there was a concession for buying the land of al-Hirah because it was land of a peace treaty. (b) Yahya (may Allah have mercy on him) said: I asked Hasan bin Salih (may Allah have mercy on him), and he disliked buying kharaj land which was taken by fighting and on which kharaj was imposed, and saw no harm in buying land of a peace treaty.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18408