Within himself (en heautōi). As soon as he had time to think the thing over carefully. He knew that he was guilty of embezzlement of the Master’s funds.
Taketh away (aphaireitai). Present (linear) middle indicative of aphaireō, old verb to take away. Here the middle present means, He is taking away for himself.
To beg I am not ashamed (epaitein aischunomai). The infinitive with aischunomai means ashamed to begin to beg. The participle, epaitōn aischunomai would mean, ashamed while begging, ashamed of begging while doing it.