The Case of a Fasting Person’s Keeping a Ring, a Pebble or a Date Stone in His Mouth while Fasting

“I once asked abu ‘Abd Allah (a.s.), about a man who becomes thirsty in the month of Ramadan. He (the Imam) said, ‘It is not harmful if he sucks his signet.’”

“I once heard abu ‘Abd Allah (a.s.), say, ‘The presence of a signet in the mouth of a fasting person is not harmful, but a date-stone is.’”