--kabalaya göre 40 sayısı dünyanın 4 tarafını (yanını) belirtir, ve her bir taraf 10 seferot içerir.

-- in the early 19th century, german explorer alexander von humboldt noted the practice among the pagans in mexico, being held in the spring. his account states: three days after the vernal equinox…began a solemn fast of forty days in honour of the sun.

--a lent of forty days was also commemorated in egypt. according to by english scholar john landseer, in his sabean researches (1823), an egyptian lent of forty days was held in honor of osiris.

--symbolize the death with oneself and the spiritual rebirth.(in symbolism) --- muhammet'de 40 yaşında peygamber olmuştu ne tesadüf değil mi ?