What is the ruling on using the siwak during the day of Ramadan for the fasting person?

What is the time when the intention to fast for Ramadan is valid?

Is it permissible for a woman to fast voluntary fasts without her husband's permission?

What is the specific vow, and when is the intention for fasting it?

Is it disliked for a fasting person to exaggerate in rinsing and inhaling water?

What is the time for intention for voluntary fasting?

My friend, a dentist, wants to invest his money in a business with a friend who trades in thyme, and this is its season, but his friend does not have the money. So he asked the doctor to buy thyme from the source and then sell it to the thyme specialist, who is his friend, at a deferred price for four months, with an increase over the actual purchase value, as the price of thyme originally is 2000, and he sells it after purchase and ownership for 2250 dinars. Is this permissible?

What is the time of intention for fasting an absolute vow?

What is the ruling on buying and selling cats and dogs?