2. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn Sinan from Ishaq ibn ‘Ammar who has said the following: “I once said to abu ‘Abd Allah عليه السلام, ‘I associate with careful people and content myself with a small amount of oil which I use little by little every day.’ He (the Imam) said, ‘I do not like it for you.’ I then asked, ‘Should I then use one day and should not use the next day?’ He (the Imam) said, ‘I do not like that for you.’ I then asked, ‘Can I use once after every two days?’ He (the Imam) said, ‘You can apply oil every Friday, once or twice a week.”’