My father narrated to us. He said: Sa`d b. `Abdullah narrated to us from Ya`qub b. Yazid from Yahya b. al-Mubarak from `Abdullah b. Jabala from Ishaq b. `Ammar. He said: I heard Aba `Abdillah al-Sadiq say:

There is no prayer (salat) for a haqin, nor a haqib, nor a haziq. A haqin is one who has urine [and cannot control it]. A haqib is one who has gas [and cannot control it]. A haziq is one whose feet have been injured.