«انْهَضْ بِنَا لِنَقْبِضَ الصِّلَاتِ وَلِنَسْتَنْقِضَ الْإِحَالَاتِ»
Come along, so we may collect the gifts and secure payment of the written assignments.
Al-ṣilāt are gifts or benefactions. Al-iḥālāt refers here to the written payment directions or assignments prepared in the gathering. Their practical purpose is to turn promises into funds.
This is an important narrative stage. The elaborate story was effective not merely because people admired it: members of the gathering pledged material support, and now Abū Zayd intends to collect it.