authentication

Hadith Question: Grinding seven Ajwa dates with their pits

Q: Is the following Hadith Sharif sahih and suitable to quote?

Hadhrat Sa'd bin Abi Waqqaas (RA) reports that Rasulullaah (SAW) once came to visit him when he fell ill. Rasulullaah (SAW) placed his hand on Hadhrat Sa’d (RA)’s chest, because of which he felt a cool feeling spread through his chest. Rasulullaah (SAW) said, “His heart is palpitating. Take him to Haarith bin Kaldah, who is a very good physician. He needs to grind seven Ajwa dates with their pits and administer it.” [Abu Dawood 3875]

Hadith authentication

Q: I would like to know if the following Hadith is authentic? "The Imam who will create a world state will make the ruling nations pay for their crimes against society. He will bring succor to humanity... He will teach you simple living and high thinking. He will make you understand that virtue is a state of character which is always a mean between the two extremes, and which is based upon equity and justice. He will revive the teaching of the Holy Qur'an and the traditions of the Holy Prophet after the world has ignored them as dead letters.... He will protect and defend himself with resources of science and supreme knowledge. His control over these resources will be complete. He will know how supreme they are and how carefully they will have to be used. His mind will be free from desires of bringing harm and injury to humanity. Such a knowledge to him will be like the property which was wrongly possessed by others and for which he was waiting for the permission to repossess and use. He, in the beginning, will be like a poor stranger unknown and uncared for, and Islam then will be in the hopeless and helpless plight of an exhausted camel who has laid down its head and is wagging its tail. With such a start he will establish an empire of God in this world. He will be the final demonstration and proof of God's merciful wish to acquaint man with the right ways of life." - Islam (Shiite)- Nahjul Balagha, Khutba 141, 187

Pleasing one's husband

Q: Please advice are these Ahaadith authentic? Nabi (Sallallahu Alayhi Wasallam) said when making love, do not walk away until you taste her water and she also tastes your water. Meaning you both reach orgasm. Nabi (Sallallahu Alayhi Wasallam) said, when a wife engages in something or beautifies herself to attract her husband, inviting him to bed shall be given 10 rewards, 10 sins wiped and her daraja will be raised.

Story of Laila bint Ajmaa

Q: My question is, is there any story in the history of Islam about laila bint ajmaa that she swore that if her slave don't divorce his wife then she will be yahoodi or esayi and her wealth will be free for Allah and all her slaves will be free. After this she went to Umme Aaisha and asked her about this. Aaisha (Radiyallahu Anha) replied that do kaffara of yamin and then she went to Ibn Umar and he also reprimanded her that fear Allah and do kaffara of yamin. Is this story valid or saheeh or hassan or daeef?