"Why, when one of the caliphs laughs, examines his legs and rests on his shoulders?

Al-Marsad Newspaper: The writer Meshaal Al-Sudairy said: "I want to introduce to you, without interference or (retouching), this trial, which I drew from heritage books, and which was led by a Sheikh Lin Araka, divorced, called: son of Abu Laila, and during the trial, the talents of the women were manifested. To each other without pity or pity.
The problem was between an old woman and a beautiful girl. "

The story of an old girl and a woman
He added in an article published in the Al-Sharq Al-Awsat newspaper entitled "Check his legs and lie on his shoulders." The girl told the judge: "This is my aunt and I call her mother for her old age.My father died and left money and let me go. Kneeling women, my cousin Vtobtni, Vzojtni, and I adored the indescribable, and while my aunt's daughter realized this, my aunt made my husband want him and him said: I am not her husband to make me my niece, he said to her: I did not feel it until the messenger came to me and said: your aunt reads you peace and tells you that your husband is lecturing my daughter and I want to marry her even place your order in my hand and he did it, then you are divorced, Vhmdt God that carried, and that my aunt this pair of foot travel, he asked me about my story, I told him, he said: Tzojina you? I said: yes to make my aunt in my hands, he said: I have done, so I sent to my aunt that your husband had hired me and I hang on it until it makes you in my hands, he divorced !.

The position of the judge
He continued: The judge laughed. I said, cousin, that the law is not ashamed of that, and I have reconciled if you married a husband, is yours in my criticism? I said: make the order of my cousin with my own hands, he said: I did, so I sent to my cousin that my husband had me hired and I stayed until he placed your order in my hands, so, you are divorced.

Caliph Al Mansour
He added: The judge said: Yes, woe and setback, the judge then went to the Caliph al-Mansur and told him that until he laughed, he examined the paws from the ground and lay on his shoulders, then he withdrew and said: God removed the old and Faraj – finished.

He concluded by saying, "I seriously wonder why you see the old caliphs every time someone laughs at the examination of his legs and that he rests on his shoulders ?!
Answer my question, may God have mercy on you.