It is narrated from Sayyiduna al-Nu'man bin Bashir (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When one of you goes to sleep intending to pray at night, let him place a handful of dust on his right side; then when he wakes up, let him take it with his right hand and throw it to his left side."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Yahya bin Abi Kathir (may Allah have mercy on him) except Ayyub bin Utbah; Anbasah bin Abd al-Wahid is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب العين / 4326
Hadith Takhrij«أخرجه البزار فى «مسنده» برقم: 3292، وابن حجر فى «المطالب العالية» برقم: 588، والطبراني فى «الكبير» برقم: 205»