Imam Malik relied on the practice of Medina, transmitted by the Companions' own students.

The evidence

1. The chain of transmitters — passage/muwatta-1-001

   1. person/malik-ibn-anas
   2. person/muhammad-ibn-shihab-al-zuhri
   3. person/muhammad

   The first hadith of the Muwatta — Malik narrates it with his isnad.

2. chronicle — work/muwatta-malik

   A Muwatta passage showing Malik's method in gathering the Medina school's law, faithfully rephrased.

3. object — place/medina

   The Prophet's city — the first home of fiqh where the prophetic practice settled.