Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "A well-off person's delaying (payment) is injustice; when someone is referred to another person for collecting (his due), he should follow up that other person; and two deals in one deal are not permissible."
Ahmad and al-Bazzar recorded it, and their wording is: "The Prophet (peace and blessings be upon him) forbade making two deals in one deal." The narrators of Ahmad are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البيوع / 6385
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه البزار فى المسند (1279) اخرجه احمد فى المسند (5395) ، أخرجه مسند أحمد برقم: 5372، 6591، وأخرجه البحر الزخار المعروف بمسند البزار 10 - 18 برقم: 5913»