Q: Is there any basis for these advices and will it be preferable to follow it:
Deeds or foods that weaken the memory
1. Sins.
2. Sour Apples.
3. Vinegar.
4. All those things that cause phlegm.
5. Moist Coriander.
6. Salted meat.
7. Hot bread.
8. Eating from a pot.
9. The leftover drink of a rat.
10. Reading tombstones.
11. Witnessing a crucifixion.
12. Looking at stagnant water.
13. Looking at one’s own private parts.
14. Looking at the private parts of a woman.
15. Masturbation.
16. For a person in need of a fard bath to look at the sky.
17. Looking into the mirror of a cupper (one who does cupping).
18. Using a broken comb.
19. Urinating in stagnant water.
20. Urinating on the side of the road.
21. Urinating under a fruit tree.
22. Urinating into ash.
23. Making wudhu in an impure place.
24. Wiping the hands or face with the tail of the clothing/kurta/qamis etc.
25. Entering the Masjid with the left foot or leaving with the right.
26. Dusting clothes in the Masjid.
27. Sweeping with a cloth.
28. Using a pants or turban as a pillow.
29. Excessive joking.
30. Laughing in the graveyard.
31. Excessive worries of the world.
32. Cupping on the nape.
33. Throwing of live lice.
References for the above Al-Mu’jamul Kabir of Tabarani, Kitabul ‘ilm of Ibn Abi Khaithamah, pg.31, Al-Jami’u li akhlaqir rawi, pgs.400 & 404, Ta’limul Muta’allim pg. 43, Al-Maqasidul Hasanah pg. 519, Tazhkiratu Sami’ Wal Mutakallim pg. 77, At-tibb of Imam Dhahabi, pgs.174-175 & Raddul Muhtar.