The Case of Man who is Summoned to Testify

5. A number of our people have narrated from Ahmad ibn Muhammad ibn ‘Isa from al-Nadr ibn Suwayd from al-Qasim ibn Sulayman from Jarrah al-Madi’iniy who has narrated the following: “He (the Imam) عليه السلام, has said, ‘When you are called to present your testimony you must accept to testify.’”