Buddhist Concept of Mother

Love of a mother
Buddhist believes that there is no single being that have not served as our mother through this endless cycle of birth in this samsara. That is why it is extremely important to dedicate all the merits of our past, present and future for the well beings of others, towards the boundless sky like beings of universe.

The 10th stanza of THE 37 PRACTICES OF A BODHISATTVA (Rgyal-sras lag-len so-bdun-ma)
By Thogme Zangpo says:

 In each incarnation, through all of our lives, we have been cared for by others with motherly love.
While these mothers of ours are still lost in samsara, how cruel to ignore them and free but ourself!
To save other beings, though countless in number, to free from their sorrow these mothers of old,
Produce Bodhichitta, the wish to be Buddha - the Sons of the Buddhas all practise this way.