How many are the creatures that carry not their own food for sustainable? It is Allah who feeds them and you, For He hears and knows all things.

 Birds don’t carry their food

                                                         Allah is Al Razzaq, He is the provider 
Allah says in surah Ankaboot ayah 60: 

“ How many are the creatures that carry not their own food for sustainable? It is Allah who feeds them and you, For He hears and knows all things.”

Allah has commanded for every capable individual to put in the right effort in search of provision despite it being pre-determined for everyone. This is also reflected in the way Allah has created birds and animals, their way of life, to survive and to procreate. The Prophet s.a.w. mentioned in a hadith:
لَوْ أَنَّكُمْ كُنْتُمْ تَوَكَّلُونَ عَلَى اللَّهِ حَقَّ تَوَكُّلِهِ لَرُزِقْتُمْ كَمَا يُرْزَقُ الطَّيْرُ تَغْدُو خِمَاصًا وَتَرُوحُ بِطَانًا

“If you were to rely upon Allah with the reliance He is due, you would be given provision like the birds. It goes forth hungry in the morning and returns with a full belly at dusk.” (Sunan At-Tirmidhi)

First of All lets understand what is Rizq? 
Wealth, health, even the greying hair is Rizq from Allah. Some scholars translate Rizq as ‘sustenance’, ‘provision’ and some call it ‘blessings’. It can also be seen as something that brings benefit or that which repels harm. Given that, it is quite difficult to encapsulate the meaning of Rizq in a single translation because Rizq is sustenance, provision, blessings and more.

Remember that rizq is already written for you "The concept of rizq is so beautiful. Even when you eat a piece of fruit, it was always written for you. From the moment it grew from a tree, it went through all these people and travelled all this way until it was in your hands. It was always meant to be yours."

As a believer, one needs to be aware of the intricate relationship between faith and effort in the concept of finding Rizq. Limiting it to only faith that provision will come with no effort is insufficient. However, doing the opposite by making the necessary effort without acknowledging reliance on Allah s.w.t, is also misguided and will lead the person to an undesirable result.

A believer needs to be aware that whatever he/she brings to the table at home is merely a part of the Rizq Allah has bestowed upon him/her. We can look at how the day went without accidents and the family being able to commune under one roof as also Rizq. The situation where the children can learn and be good Muslims is also Rizq. There is just so much that Allah gives us but we tend to overlook and only focus on the hardships that He tests us with.
Rizq is not only the physical. It encompasses everything from that which is emotional and spiritual as well, such as the feelings of contentment and peace for example.