তুমি যদি পূর্ণভাবে আল্লাহর ওপর ভরসা করো, যেমনটা করা উচিৎ, তাহলে তিনি অবশ্যই তোমার সব প্রয়োজন পূরণ করবেন, যেমনটা তিনি পাখিদের জন্য করেন। তারা ক্ষুধার্ত হয়ে বাসা থেকে বের হয়, কিন্তু ভরা পেট নিয়ে নীড়ে ফেরে – তিরমিযী "If you place your complete trust in Allah, as you should, He will certainly fulfill all your needs, just as He does for the birds. They go out hungry from their nests, but return to their homes with full stomachs." #Quote   Copy

Birds ( Aves ) are a group of endothermic vertebrates , characterised by feathers , toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart , and a lightweight but strong skeleton . Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich . They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines , sometimes known as perching birds or, less accurately, as songbirds .