18. Through the same chain of narrators as that of the previous Hadith it is narrated from Muhammad ibn al-Husayn from al-Hakam ibn Miskin from ’Abd Allah ibn Ali al-Sarrad who has said the following: “Once, abu Kahmas asked abu ‘Abd Allah عليه السلام, ‘Should a man perform his optional Salah (prayer) in one or in different places?’ He (the Imam) said, ‘No, one should perform them here and there because they testify in one’s favor on the Day of Judgment.’”