Narrated Jabir ibn Abdullah:Wahb said: I asked Jabir about the condition of Thaqif when they took the oath of allegiance. He said: They stipulated to the Prophet (ﷺ) that there would be no sadaqah (i.e. zakat) on them nor Jihad (striving in the way of Allah). He then heard the Prophet (ﷺ) say: Later on they will give sadaqah (zakat) and will strive in the way of Allah when they embrace Islam.
حَدَّثَنَا الْحَسَنُ بْنُ الصَّبَّاحِ، حَدَّثَنَا إِسْمَاعِيلُ، - يَعْنِي ابْنَ عَبْدِ الْكَرِيمِ - حَدَّثَنِي إِبْرَاهِيمُ، - يَعْنِي ابْنَ عَقِيلِ بْنِ مُنَبِّهٍ - عَنْ أَبِيهِ، عَنْ وَهْبٍ، قَالَ سَأَلْتُ جَابِرًا عَنْ شَأْنِ، ثَقِيفٍ إِذْ بَايَعَتْ قَالَ اشْتَرَطَتْ عَلَى النَّبِيِّ صلى الله عليه وسلم أَنْ لاَ صَدَقَةَ عَلَيْهَا وَلاَ جِهَادَ وَأَنَّهُ سَمِعَ النَّبِيَّ صلى الله عليه وسلم بَعْدَ ذَلِكَ يَقُولُ " سَيَتَصَدَّقُونَ وَيُجَاهِدُونَ إِذَا أَسْلَمُوا " .
AbuDaud
Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah) • Hadith 3025