Informal supplications and prayers (du'a) do not require such a bath. Andromache mingles curses and threats with her supplications entreating Ulysses, but not prevailing upon him. These are mainly Quran recitations, lectures, elegies, and supplications. There are various reasons due to which Du'as, supplications and invocations are not accepted. The clapping is known as "kashiwade" or "hakushu"; the prayers or supplications as "kigan". The supplications (Duaas) of Prophets are given in the Quran. God rejects supplications if the worshipper is hasty or does not have patience. It also includes occasional anguished supplications to God. He is also well known for finding people's lost belongings after fervent supplications. With the salat completed one should immediately say the supplications "al-Istikharah". Above all, Muhammad did not fast while he stood before Allah offering supplications in Arafah. Tawassul, as the main habitude of supplications, has key role in to acceptation of them. This is followed by "Tachanun", supplications, and then the full Kaddish. In several supplications Imam Sajjad explains the concept of Imamate (leadership). It is a collection of supplications from reliable Shia books.