Summarized Fatawaa
• Is it permissible for a praying person to make supplication in each Sajdah( a prostration) of obligatory prayer?
It is permissible for a praying person, whether praying individually, or in congregation, to make supplication during Sujood(prostration) in obligatory, or voluntary prayers. However, it is disliked for the Imam to do so since he is required to spare the prayer performers any sort of hardship, unless he is leading a certain group who don`t mind him extending the prayer.
• I see horrible dreams although I perform the prescribed prayers, what do you make of that?
Praise be to Allah the Lord of the Worlds.
Be mindful of Allah while awake and he will safeguard you from whatever evil you see while asleep. We advise you to make the pre-sleep supplications. And Allah the Almighty knows best.
• Is it permissible for a wife to refuse to go to bed with her husband (for sexual intercourse)?
It isn`t permissible for her to do so unless for a sound reason.
• Should missed Sunnah prayer be made up ?
Making up missed voluntary acts of worship is from Sunnah.