مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٢٣٧ - THE RECOMMENDED AND ABOMINABLE ACTS OF PROSTRATION

OBLIGATORY PROSTRATIONS OF THE HOLY QURAN
١١٠٢. To recite or hear anyone of the following verses of the holy Quran the performance of prostration becomes obligatory: (i) Surah as Sajdah, ٣٢:١٥ (ii) SurahHa Mim Sajdah, ٤١:٣٨ (iii) Surah an-Najm, ٥٣:٦٢ and (iv) Surah al-Alaq, ٩٦:١٩. Whenever a person recites such a verse or hears it being recited by someone else heshould perform prostration immediately when the verse ends, and if he forgets to perform it, he should do it as and when he recollects it, and the apparent position is thatif a person hears involuntarily it is not obligatory for him to perform prostration, although it is better to perform it.
١١٠٣. If a person hears the prostration verse being recited by someone else and also recites it himself he should, on the basis of obligatory precaution, performtwo prostrations.
١١٠٤. If a person is performing prostration which is not a part of prayers and hears someone else reciting the prostration verse or recites it himself he shouldraise his head from prostration and perform another prostration for that verse.
١١٠٥. If a person hears or listens to the verse of obligatory prostration from gramophone, or tape-recorder, or a small child, who cannot distinguish between goodand bad, or a person who does not intend reciting the holy Quran, it is not obligatory for him to perform prostration, and the same order applies if the verse of prostrationis transmitted from radio or television or through a tape-recorder. However, it a person recites the verse of obligatory prostration from the radio station with the intentionof reciting the holy Quran and another person hears it on the radio, it is obligatory for him to perform prostration.
١١٠٦. The place, where a person performs an obligatory prostration of the holy Quran should not be a usurped one, and, on the basis of obligatory precaution, theplace where he places his forehead should not be higher than four joined fingers from the