Hazrat Jabir (may Allah be pleased with him) narrated that the Prophet Muhammad (peace and blessings be upon him) forbade mixing raisins and dates (in syrup), and mixing unripe and ripe dates together for soaking. (Because in this way, intoxication is produced.)

Hazrat Abu Qatadah (may Allah be pleased with him) narrated that the Noble Prophet (peace and blessings be upon him) forbade mixing ripe and half-ripe dates, ripe dates and raisins together to make nabidh. He instructed that each should be soaked separately.