What is the characteristic of supplication (du'a) and the posture the supplicant (da'i) should assume, what are the conditions for the acceptance of supplication, and what are the appropriate formulas for supplication during the night vigil (qiyam al-layl), between the adhan and the iqama, and for brothers and sisters for success in prayer and hijab?

When supplicating, it is not a condition to adhere to a specific posture, or to be in a state of ritual purity (tahara), or to raise one's hands. Supplication is permissible in all circumstances except in defiled places. It is commendable for a Muslim to observe the etiquettes of supplication. There is no specific supplication prescribed between the Adhan and Iqamah other than the dhikr (remembrance) mentioned upon hearing the Adhan, but this period is one of the times when supplications are answered. A Muslim may supplicate for whatever they wish, as long as they do not supplicate for sin or for the severing of family ties. One can supplicate for brothers and sisters with words such as: "O Allah, grant success to my brothers and sisters in what You love and what pleases You."