If only you rely upon Allah the way you should, He will provide for you as He provides for birds: They set out hungry in the morning and return with full bellies in the evening

The Prophet (may Allah's peace and blessings be upon him) urges us to rely upon Allah Almighty in bringing about benefits and warding off evils in terms of worldly and religious affairs, for indeed, no one gives or withholds and causes harm or brings benefit except He, Exalted be He. And that we should pursue the proper means to achieve the benefits and avert the evils while relying on Allah.

Once we do this, Allah will provide for us as He provides for birds, who go hungry in the morning and return in the evening with full bellies. This practice of the birds falls under the pursuit of the proper means of seeking sustenance without lethargy and passive reliance.