ألْف — "one thousand" in Egyptian Arabic

Heya 3ayza ketab "Alf Leila we Leila" elly kan be-80 geneh, bas ma'aha 50 geneh bas.

She wanted "One Thousand and One Nights" book, which was 80 EGP, but she only had 50 EGP.

from Mona and the Ataba Market Book

Aly sharah lu mushkeltu, w ammo Mahmoud radd: "Bel-zabt! Ana ma'aya ketab el-dars elli enta ayezuh da, khoduh. Ana baruh el-shoghl kull yom ba'd el-ahwa. Enta lazim tedrus lel-emtihan kwayyes geddan." Aly radd: "Alf shokr ya ammo! Ma'a el-salama delwa'ty, ana lazim aruh azaker beih fawran!"

Aly explained his problem to him, and Uncle Mahmoud replied: "Exactly! I have the lesson book you want, take it. I go to work every day after the coffeehouse. You must study very well for the exam." Aly responded: "A thousand thanks, Uncle! Goodbye for now, I must go study with it immediately!"

from A Book's Journey in Khan el-Khalili

Alf shokr ya fandam

A thousand thanks, sir/madam.

from Getting Lost and Asking for Directions

Mona raddet be farHa: "Ya alf shokr ya 3ammo, be gad metshakkera khales!"

Mona replied with joy: "A thousand thanks, uncle, really, I'm very grateful!"

from Good Morning at Maktabet El-Fikr