'Sparrows' in the Bible

'Are not two sparrows sold for an assar? and one of them shall not fall on the ground without your Father;

be not therefore afraid, than many sparrows ye are better.

'Are not five sparrows sold for two assars? and one of them is not forgotten before God,

but even the hairs of your head have been all numbered; therefore fear ye not, than many sparrows ye are of more value.