All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
· It is not an obligation to face the Qiblah (i.e. the direction of Ka'bah) when reciting the Quran, and it is permissible to recite the Quran while not facing the Qiblah. It is confirmed that the Prophet used to recite chapter Qaaf [Quran 50] on the pulpit, and of course, in this case, he had his back to the Qiblah.
However, the jurists mentioned that it is desirable to recite the Quran while facing the Qiblah. Their evidence for this is the Prophetic narration which reads: "There is a Sayyid (i.e. Master) for everything, and the Sayyid of the manner of sitting is to face the Qiblah.” [Al-Albaani classified this narration as authentic].
Therefore, it is permissible for you to recite the Quran while not facing the Qiblah, while leaning or in any position. It is confirmed that the Prophet used to recite the Quran while he was leaning on 'Aa'ishah's lap .
· As regards the prostration due to the recitation of the Quran, according to the majority of the scholars it is desirable and not an obligation. Thus, if a person recites a verse where there is a prostration, and he prostrates, he will be rewarded. However, he is not sinful if he does not prostrate. For more benefit on the ruling of the prostration of the recitation of the Quran, please refer to Fatwa 84896.
· The food that remains in the teeth does not invalidate ablution or the prayer. Even if one performs the prayer and finds some food particles in his mouth and swallows them, his prayer is not invalidated as stated by the jurists .
Allaah Knows best.