Hadith.2591 - Muhammad ibn Muslim asked Abu Abdullah (as) about a man who carries his wife or touches her, and as a result, ejaculates or emits pre-seminal fluid.
Imam (as) said: "If he carries or touches her with lust, whether he ejaculates, does not ejaculate, emits pre-seminal fluid, or does not emit pre-seminal fluid, he must offer a sheep as a sacrifice. If he carries or touches her without lust, then there is nothing upon him, whether he ejaculates, does not ejaculate, emits pre-seminal fluid, or does not emit pre-seminal fluid."