Narrated Khalid bin Ma'dan (RA): Surat al-Hajj has been distinguished by two prostrations. [Abu Dawud reported it among al-Marasil (a broken chain after the Tabi'i)] . Ahmad and at-Tirmidhi reported the above Hadith through a full chain of narrators from 'Uqba bin 'Aamir. It has the addition: "If anyone does not make two prostrations (when reciting Surat Al-Hajj), he should not recite it." [The chain of this Haditb is Da'if (weak)] .